bisecting fixing commit since c9fda4f22428e09728b611ec9100157199039bfe building syzkaller on f39aff9e4a422297d30f25d0b53f0258a445fbee testing commit c9fda4f22428e09728b611ec9100157199039bfe with gcc (GCC) 8.1.0 kernel signature: f927b99eeb15522d4f08799cbd04e444a1ee8448cefb6ceb93d5dc786314959e all runs: crashed: kernel BUG at arch/x86/kvm/mmu.c:LINE! testing current HEAD 4139fb08c05fec734f85a99e8b7d99dc12b1b68c testing commit 4139fb08c05fec734f85a99e8b7d99dc12b1b68c with gcc (GCC) 8.1.0 kernel signature: 33764ac1c6d965521f0dd7645f2aa2747c6af1bc5f33ff37a5640de69b4e74d1 all runs: boot failed: WARNING in kvm_mmu_set_mmio_spte_mask revisions tested: 2, total time: 29m34.784236896s (build: 14m58.623870858s, test: 13m37.878788692s) bisection is inconclusive, the first good commit could be any of: c9fda4f22428e09728b611ec9100157199039bfe 4139fb08c05fec734f85a99e8b7d99dc12b1b68c